Sienna Miller: Style Evolution

Tough-Girl Pony

Miller strutted into her "G.I. Joe The Rise of Cobra" premiere (which I'm sure you totally saw on opening night, didn'tcha?) with this tough-girl-chic hair.

The pony placement is key: it isn't too high (too girly) or too low (too momsy). To cop it, tease your crown, then flip your head and spray hair with hairspray. While in that position, pull hair into a pony using your hands. Stick the pony an inch below the center of the back of your head, where your skull bone starts to curve down toward your neck. Flip up. "That's how she got it [looking] not-perfect," Nerizagal says.